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Chapter 4: Matrices


What is a matrix? Is a rectangular arrangement of objects, each of whichis called an element of the matrix.
What are two matrices called? Two matrices are equal matrices if and only if they have the same dimensions and their corresponding elements are equal.
2 X 1 matrix is callled a point matrix
Definition of Matrix Multiplication Supoose A is an m X n matrix and B is an n X p matrix. Then the product A X B(or AB) is the m X p matrix whose elemnt in row i an column j is the product of row i of A and column i of B.
What is a transformation? Is a one to one correspondence beteen the points of a preimage and the points of an image.
What is a reflection? Is a transformation that maps a figure to its reflection image.
Thereom If two lines have slopes m1 and m2 and m1m2=-1, then the lines are perpendicular.
What is a rotation? The amount and direction of the turn determine the magnitude of the rotation.
Created by: kmalone30